Algae

Structure of Algal Cell The structure of algal cell is as follow: Types of Cells The algal thalli are formed of two types of cells: Prokaryotic Cells The cells in which, the nucleus is not surrounded by nuclear membrane. The DNA is in the form of a nuclear body. The photosynthetic pigments are organized in membranous sacs, the thylakoids. The ...

Algae Algae are the chlorophyllus thallophytes that can manufacture them own food and they produce O2 during photosynthesis. So, they are called as autotrophic thallophytes. General Characteristics of Algae The term thallus is used for a plant body that is not differentiated into root stem and leaves and lacks vascular system. The study of algae is known as phycology (phycos ...

General Characteristics of Xanthophyta The members of this division are characterized by their yellow-green color. So, the members of this division are called yellow-green algae. The division includes 76 genera and 376 Species which are included in a single class, the Xanthophyceae. Characteristics of Xanthophyta A majority of yellow-green algae are freshwater but some of the species are aerial growing ...

Phaeophyta Characteristics of Phaeophyta The members of this division are commonly called brown algae because of dominant carotene and fucoxanthin, The brown algae are widespread and with few exceptions all are marine. They grow attached to the rocks, shells, or coarser algae such as the kelps. In general, the brown algae flourish in colder ocean waters and on rocky coasts, ...

Charophyta The green algae included in this division was once classified in Chlorophyta as a class Charophyceae, but now raised to the status of division. The genera included in Charophyta are very much different from the members of Chlorophyta morphologically and in some other characteristics. General Characteristics of Charophyta The plant body is macroscopic and resembles those of Arthrophyta. The ...

Chlorophyta The division Chlorophyta (Gr. chloros=green + phyton=plant) includes a single class Chlorophyceae (Gr. phykos=seaweeds). Characteristics of Chlorophyta The members of this division are characterized by presence of grass-green chromatophores. The green algae are widespread and occur both in fresh and marine waters, on moist wood and rocks, and on the surface of and within soil. A number of species are ...

Majority of them are fresh water. They are also found on moist soil. They form dark green mats. General structure of Vaucheria Vegetative structure:The thallus is filamentous. The filament is cylindrical, branched, tubular, erect coenocytic. The filament is attached to the substratum by hepteron. Hepteron is colourless branched rhizoid like structure. Filament increases in length by apical growth. Cross walls are ...

Occurrence of Diatoms: Diatoms are sea-going. They are both marine and new water. They frame tanish filth on the surface of mud and lakes. Diatoms are bottomless amid spring and pre-winter months. They are for the most part microscopic fishes. Some are connected to the substratum. Vegetative structure: Diatoms are unicellular creatures. A few structures states. Adhesive covers join the ...

Laminaria is found along shores of seas. The majority of the species are lasting. Vegetative structure Plant body The plant body is sporophyte. The sporophyte is separated into three sections: holdfast, stipe and cutting edge. The holdfast is an arrangement of forked root like branches (hapetra). The stipe is constantly unbranched it might be barrel shaped or straightened. Single edge ...

Occurrence Ectocarpus is a brown alga. It is abundantly found throughout the world in cold waters. A few species occur in fresh waters. The plant grows attached to rocks and stones along coasts. Some species are epiphytes on other algae like members of Fucales and Laminaria. Ectocarpus fasciculatus grows on the fins of certain fish in Sweden. Ectecarpus dermonemcnis is ...